engine control module
DESCRIPTION
Get the complete details about Engine Control Module System and how to control our engine.TRANSCRIPT
![Page 1: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/1.jpg)
Engine Control Module System
![Page 2: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/2.jpg)
Engine control module is known as power train control module or engine control unit
![Page 3: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/3.jpg)
Requirement In A Car
![Page 4: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/4.jpg)
Requirement
The main function of this controllers is to get information from sensors & run
certain actuator.
When getting any problem, then ECU
shows a check engine light in engine
display.
![Page 5: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/5.jpg)
Types Of Sensors
![Page 6: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/6.jpg)
Types Of Sensors
1- Engine coolant temperature sensor
2- Air temperature sensor
3- Manifold absolute pressure sensor
4- Mass air flow sensor
5- Idle air controller
6- Crankshaft sensor
7- Camshaft sensor
8- Throttle position sensor
9- Oxygen sensor
10- Knock sensor
![Page 7: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/7.jpg)
Engine Coolant Temperature Sensor
![Page 8: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/8.jpg)
Its function is to instruct radiator fan to turn on and cooling down the liquid after getting temperature above 75 degree.
Its is usually located at the bottom of radiator or top radiator hose towards engine
block.
Function
![Page 9: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/9.jpg)
Air Temperature Sensor
![Page 10: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/10.jpg)
Function
Air temperature sensor tells temperature of air going into engine.
It is usually located in air filter box or pipe that is attached to the air filter box.
![Page 11: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/11.jpg)
Manifold Absolute Pressure Sensor
![Page 12: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/12.jpg)
Function
This sensor measures air pressure which tells ECM the current altitude of a vehicle.
It is bolted on the intake manifold or linked with a vacuum pipe from intake
manifold.
![Page 13: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/13.jpg)
Mass Air Flow Sensor
![Page 14: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/14.jpg)
Uses
This type of sensor measures the volume of air entering into
engine.
It produces more current to keep temperature required by the manufacturer, it is located
on air cleaner box.
![Page 15: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/15.jpg)
Idle Air Controller
![Page 16: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/16.jpg)
Uses
It works for keeping rpm of engine steady, it is an actuator
not a sensor.
It increases the rpm of car until the coolant temperature sensor
indicates the high engine temperature .
![Page 17: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/17.jpg)
Crank Shaft Sensor
![Page 18: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/18.jpg)
It works to locate the exact position
of crank shaft & to show rpm of
engine.
It is located at the bottom of
engine & closed to crank
shaft
Uses
![Page 19: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/19.jpg)
Camshaft Sensor
![Page 20: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/20.jpg)
The sensor contacts with
ECM for position of camshaft, it is fixed at the end
of camshaft.
It is an electromagnetic
sensor which produces
voltage when a metal object
moves past it.
Uses
![Page 21: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/21.jpg)
Throttle Position Sensor
![Page 22: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/22.jpg)
Uses
This sensor is linked with accelerator pedal and the throttle body, sends
information about injector pulse width & spark timing.
It is located in throttle body and it is not washable nor repairable.
![Page 23: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/23.jpg)
Oxygen Sensor
![Page 24: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/24.jpg)
It can detect the oxygen content so as to know about fuel
amount consumed by the engine. There are two types of oxygen sensors, one is zirconia and
another one is titania.
Uses Of The Sensor
![Page 25: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/25.jpg)
Knock Sensor
![Page 26: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/26.jpg)
Uses
This sensor contains a crystal & the crystal
detects mechanical stress and produces a voltage when the car knocks.
It also allows different grade fuel without any
type of engine problem & it is fixed in engine body.
![Page 27: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/27.jpg)
What Happens When Any sensor Fails
![Page 28: Engine control module](https://reader036.vdocuments.us/reader036/viewer/2022082223/55839e62d8b42a03088b46cf/html5/thumbnails/28.jpg)
Sometime sensors get failed and do not function
properly.
When getting any type of problem in sensor, then immediately change the
sensor or repair if possible.